| 有云时大气红外遥感及其反演问题 I. 理论研究 |
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| 引用本文： | 李俊,曾庆存.有云时大气红外遥感及其反演问题 I. 理论研究[J].大气科学,1997,21(3):341-347. |
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| 作者姓名： | 李俊 曾庆存 |
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| 作者单位： | 中国科学院大气物理研究所，北京 100029,中国科学院大气物理研究所，北京 100029 |
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| 摘 要： | 我们已经研究了晴空情况下的大气红外遥感及其反演问题。本文对有云情况下的大气红外遥感及其反演问题进行了研究，首先指出国际上通用的处理有云反演的晴空订正法存在误差放大问题，然后提出了3×3相邻视场同步反演法，在该方法中，假定3×3相邻视场具有共同的大气温度廓线和大气水汽廓线，从而使求解方程数增加到9倍，而反演参数只增加有限的几个，大大提高了有云情况下反演的稳定性。
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| 关 键 词： | 晴空订正法 相邻视场 同步反演法 |
Study of Infrared Remote Sensing of the Cloudy Atmosphere and the Inversion Problem. Part I: Theoretical Study |
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| Li Jun,Zeng Qingcun and Zeng Qingcun.Study of Infrared Remote Sensing of the Cloudy Atmosphere and the Inversion Problem. Part I: Theoretical Study[J].Chinese Journal of Atmospheric Sciences,1997,21(3):341-347. |
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| Authors: | Li Jun Zeng Qingcun and Zeng Qingcun |
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| Abstract: | In our previous papers, the retrieval of clear atmospheric parameters from satellite observed infrared radiances was studied. In this paper, the retrieval of the atmospheric temperature profile, moisture profile, surface skin temperature, cloud top pressure and cloud amount from the infrared sounder radiances under the cloudy condition is studied. We assume that the 3 by 3 adjacent fields of view (FOV) have the same atmospheric temperature profile, water vapor mixing ratio profile and cloud height, except the surface skin temperature and cloud amount which have different values in the 9 FOVs. Thus, one atmospheric temperature profile, one moisture profile, 9 surface skin temperatures, one cloud top pressure and 9 cloud amounts are retrieved simultaneously from the 3 by 3 FOV infrared sounder observations. Since the number of equations for retrieval is increased by 9 times, the inversion problem is well conditioned. |
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| Keywords: | cloud clearing method adjacent field of view simultaneous retrieval method |
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